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Finding the Fourth Proportional to 555,004.20, 832,506.30 and 520,012.20

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Solution

The fourth proportional to 555,004.20, 832,506.30 and 520,012.20 is: 780,018.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,004.20 : 832,506.30 = 520,012.20 : x
  2. Step 2: Convert to fraction form
    555,004.20/832,506.30 = 520,012.20/x
  3. Step 3: Cross multiply
    555,004.20x = 832,506.30 × 520,012.20
  4. Step 4: Simplify right side
    555,004.20x = 432,913,432,576.86
  5. Step 5: Solve for x
    x = 432,913,432,576.86/555,004.20
  6. Step 6: Final answer
    x = 780,018.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.